Definition of ice giant in English:

ice giant

noun

  • 1Scandinavian Mythology= frost giant.

  • 2Astronomy. A giant planet, such as Uranus and Neptune, whose interior is thought to contain a significant proportion of water, methane, and other normally volatile compounds in condensed forms.

Origin

Mid 19th century; earliest use found in Encyclopedia Americana. From ice + giant.

Pronunciation

ice giant

/ˌʌɪs ˈdʒʌɪənt/